Finding the Fourth Proportional to 312,696,802.42, 431,573,317.23 and 173,512,404.52
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Solution
The fourth proportional to 312,696,802.42, 431,573,317.23 and 173,512,404.52 is: 239,475,822.65
Step by Step Solution
- Step 1: Write the proportion equation
312,696,802.42 : 431,573,317.23 = 173,512,404.52 : x - Step 2: Convert to fraction form
312,696,802.42/431,573,317.23 = 173,512,404.52/x - Step 3: Cross multiply
312,696,802.42x = 431,573,317.23 × 173,512,404.52 - Step 4: Simplify right side
312,696,802.42x = 74,883,323,999,250,048 - Step 5: Solve for x
x = 74,883,323,999,250,048/312,696,802.42 - Step 6: Final answer
x = 239,475,822.65
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.